Unleash unparalleled industrial prowess with the Large Power Oil-Lubricated Screw-Compressor from China's premier supplier, Sanzhi (Henan) Compressor Co., Ltd. Benefit from factory-direct pricing on this cutting-edge Permanent Magnet Variable Frequency Two-Stage Screw Air Compressor, meticulously designed for exceptional energy savings and superior efficiency. Featuring top-tier High-Quality Centrifugal Fans, this stationary compressor establishes a new benchmark in reliability and performance, tailored for the most demanding applications. Elevate your operational capacity to new heights with our state-of-the-art compressor, engineered to deliver consistent, high-volume air output. Experience the pinnacle of industrial air compression technology, where innovation meets excellence, and efficiency meets reliability. Choose Sanzhi-where superior craftsmanship and advanced engineering converge to redefine industry standards.
Internal Structure Frontside
Internal Structure Backside
Working Principle
In an optimal air compression scenario, the power needed for one-stage pressure transmission matches the cumulative power for multi-stage compression. However, real-world operations demand more power due to coupling losses, bearing friction, and cooling effects of liquid viscosity. To enhance efficiency, it is vital to minimize each stage's compression ratio, ensuring that the total power for multi-stage compression is lower than that for single-stage compression.
The High Volume Two-Stage Screw Air Compressor features a dual rotary screw system with both active and passive screws. Powered by an external drive, the active screw propels the passive screw. The first stage includes a low-pressure screw assembly, while the second stage houses a high-pressure screw assembly. Each screw is cloaked in a sealing air film, enabling gas compression through a cycle of suction, pressurization, and exhaust as the screws rotate.
First Stage Compression: In this stage, the low-pressure screw assembly begins compressing the gas. The gas enters the screw compression chamber via the suction valve, where the high-speed rotation of the screw rotor further compresses it, transferring the gas to the second stage.
Second Stage Compression: Here, the gas enters a more confined screw space, experiencing compression at higher temperatures and pressures. The exhaust valve then opens, releasing the high-pressure gas from the system.
Natural air is drawn into the first stage through an air filter, mixing with a small amount of lubricating oil in the compression chamber. The gas is compressed to interstage pressure and cooled in the cooling channel by oil mist contact, significantly lowering its temperature. The cooled gas then enters the second-stage rotor for further compression to the final exhaust pressure. The process concludes as the compressor discharges high-pressure gas through the exhaust valve.
| Sanzhi (Henan) Compressor Co,. Ltd. |
| Two-Stage Compression Permanent Magnet Variable Frequency Screw Air Compressor |
| Model |
Power |
Exhaust pressure |
Free air delivery* of unit at working pressure |
Voltage |
Frequency |
Air outlet discharge size |
Weight |
Dimensions |
| KW |
Mpa |
m³/min |
V |
Hz |
Inch |
Kg |
L*W*H(mm) |
| SZ15VF-II |
15 |
0.5 |
4.00 |
380 |
50 |
G1½ |
660 |
1450*780*1180 |
| 0.8 |
3.00 |
| 1.3 |
2.00 |
| SZ19VF-II |
18.5 |
0.5 |
5.00 |
380 |
50 |
G1½ |
680 |
1450*780*1180 |
| 0.8 |
4.00 |
| 1.3 |
3.80 |
| 1.6 |
2.20 |
| SZ22VF-II |
22 |
0.5 |
6.60 |
380 |
50 |
G1½ |
730 |
1650*880*1280 |
| 0.8 |
4.20 |
| 1.3 |
3.00 |
| 1.6 |
2.50 |
| SZ30VF-II |
30 |
0.5 |
7.00 |
380 |
50 |
G1½ |
980 |
2000*1260*1560 |
| 0.8 |
6.40 |
| 1.3 |
4.00 |
| 1.6 |
3.00 |
| SZ37VF-II |
37 |
0.5 |
10.00 |
380 |
50 |
G1½ |
1080 |
2000*1260*1560 |
| 0.8 |
7.00 |
| 1.3 |
5.50 |
| 1.6 |
4.00 |
| SZ45VF-II |
45 |
0.5 |
13.00 |
380 |
50 |
G2 |
1980 |
2000*1260*1560 |
| 0.8 |
10.00 |
| 1.3 |
6.50 |
| 1.6 |
5.00 |
| SZ55VF-II |
55 |
0.5 |
17.00 |
380 |
50 |
G2 |
2180 |
2150*1300*1730 |
| 0.8 |
12.00 |
| 1.3 |
8.60 |
| 1.6 |
5.00 |
| SZ75VF-II |
75 |
0.5 |
20.00 |
380 |
50 |
G2 |
2280 |
2150*1300*1730 |
| 0.8 |
16.50 |
| 1.3 |
11.00 |
| 1.6 |
9.00 |
| SZ90VF-II |
90 |
0.5 |
24.00 |
380 |
50 |
DN65 |
3200 |
2700*1920*1820 |
| 0.8 |
20.00 |
| 1.3 |
14.00 |
| 1.6 |
11.00 |
| SZ110VF-II |
110 |
0.5 |
28.00 |
380 |
50 |
DN65 |
3360 |
2700*1920*1820 |
| 0.8 |
24.50 |
| 1.3 |
18.00 |
| 1.6 |
14.00 |
| Due to product updates, the above parameters are subject to deviation in kind. |
Discover the unrivaled performance of our High Volume Two-Stage Centrifugal Fan Air Compressor! Featuring a high-speed rotating impeller, it precisely accelerates and decelerates air for axial entry, enabling rapid cooling. This advanced cooling mechanism surpasses conventional air-cooled fans, ensuring uninterrupted operation and considerably extending the compressor's lifespan.
1) High Efficiency of PM Motor:Our cutting-edge permanent magnet motor showcases an expansive constant torque range and a weak magnetic range, offering 20-30% higher efficiency than conventional motors. Regardless of deviations from the rated frequency, it maintains unparalleled motor efficiency.
2) Maintenance-Free Motor:Our permanent magnet motor is designed without internal bearings, completely eliminating the costs and hassles associated with motor bearing maintenance and replacement.
3) Integrated Frequency Converter:Featuring China's premier frequency system, our compressor provides a wide-ranging speed regulation with high precision. It adjusts to actual gas demand, delivering exceptional energy-saving performance.
4) Zero Transmission Loss:The permanent magnet motor and compressor are linked through an embedded integrated shaft, removing the need for couplings and other transmission parts, achieving 100% transmission efficiency.
5) Variable Frequency Start and Soft Start:This capability greatly diminishes the impact on power grid equipment and shields electrical systems from potential harm.
6) Reduced Energy Consumption:Our frequency conversion spans from 25% to 100%, unlike ordinary conversions ranging from 50% to 100%. This results in over 30% energy savings compared to fixed-speed compressors and approximately 5% more than standard variable frequency compressors. The greater the fluctuation in system gas consumption, the more pronounced the energy-saving effect.
7) Unique Two-Stage Compression Air End:Featuring a uniquely designed air end, our two-stage compression screw machine integrates first-stage and second-stage compression rotors within a single casing. Driven directly by gears, each rotor achieves optimal linear speed and enhanced compression efficiency.
8) Innovative Internal Spray Curtain Cooling Method:This cutting-edge internal spray curtain cooling method achieves exceptional cooling, significantly lowering the temperature of compressed air. It ensures near-isothermal compression, minimizes pressure loss between stages, reduces the compression ratio, and boosts compression efficiency.
9) Minimized Internal Leakage:Our two-stage compression system reduces the compression ratio for each stage, minimizing internal leakage from high-pressure to low-pressure ends, thereby improving volume efficiency.
10) Noise Reduction:The two-stage compression reduces the overall compression ratio, significantly lowering noise levels, particularly during unloading.
11) Easy Maintenance and Service:With a two-stage compressor unit, aside from the screw air end, other systems and structures remain comparable to single-stage compressors, ensuring maintenance and user servicing are simple and convenient.
1. Exceptional Price Advantage
We offer direct ex-factory prices, ensuring our customers stay highly competitive in their markets. Enjoy unparalleled cost savings while maintaining superior quality, helping you to dominate your market.
2. Direct Transactions
Our products come straight from the factory, allowing us to provide more cost-effective solutions. By eliminating middlemen, we pass the savings directly to you, ensuring affordability without sacrificing quality.
3. Comprehensive OEM & ODM Services
With our robust production and management capabilities, we offer exceptional OEM and ODM services tailored to your needs. Partner with us to bring your vision to life with precision and excellence.
4. Personalized Customization
We welcome non-standard, export, and custom orders for voltage, power, pressure, etc. Contact us to discuss your specific requirements, and let us create a solution uniquely suited to your specifications.
5. Small Order Acceptance
Place a small trial order to experience the superior quality of our products firsthand. Discover why our clients trust SANZHI for consistent performance and reliability.
6. Rapid Delivery
Benefit from our high-quality products paired with timely and efficient delivery services. We ensure that you receive your orders promptly, keeping your operations running smoothly.
7. Full Authorization
For our distributors, we provide comprehensive authorization certificates, empowering you to market our SANZHI brand products with confidence. Leverage our brand's strength to boost your sales and credibility.
Sanzhi (Henan) Compressor Co., Ltd., a revered giant in the manufacturing industry, specializes in the creation of top-tier screw air compressors and vacuum pumps. With over a decade of steadfast devotion, our extensive product line includes standard and low-pressure screw air compressors, cutting-edge permanent magnet frequency conversion models, robust two-stage compression units, specialized compressors for laser cutting, and adaptable mobile screw compressors available in both single and double-tank versions, powered by either electric or diesel. Additionally, we innovate with our exceptional screw vacuum pumps.
Our production processes epitomize efficiency and modernity, with advanced multi-air compressor assembly lines. Supported by a team of over 50 skilled employees, we continually enhance our ERP-based management systems, drastically reducing lead times and ensuring the prompt delivery of superior-quality products.
Committed to the highest standards, our factory proudly bears ISO9001 certification, reflecting our dedication to quality management. We enforce strict quality control measures, ensuring each machine undergoes rigorous material inspections, production evaluations, and comprehensive pre-delivery checks before leaving our facility.
Our customer service ethos is unrivaled, beginning with a pre-sales team that offers expert advice to help you select the ideal air equipment, enriched by extensive customization options for both appearance and configuration. We excel in creating bespoke OEM products tailored to specific dealer requirements. Our experienced after-sales team guarantees swift and effective responses to all customer inquiries and needs.
At Sanzhi (Henan) Compressor Co., Ltd., we are dedicated to delivering high-performance, reliable products that nurture lasting customer relationships. Our efficient delivery schedules, top-tier machines, and competitive pricing ensure you receive exceptional compressed air solutions every time.
Strategically located in Xinzheng City, Henan Province, China, our factory is easily accessible. We offer complimentary transportation from Xinzheng International Airport to our facility, a short 30-kilometer journey that takes roughly one hour. We warmly welcome your visit!
FAQ
Q1. Are you a trading company or manufacturer?
A: We are a dedicated manufacturer specializing in screw air compressors, with over a decade of professional experience.
Q2. How do you control quality?
A: 1. Stringent inspection of raw materials.
2. Rigorous control of installation procedures.
3. Each machine undergoes at least 5 hours of continuous testing before dispatch.
Q3. What information must I provide to get the suitable machine?
1. The required air delivery capacity (Unit: CFM or m³/min).
2. The necessary working pressure (Unit: PSI, Bar, or MPa).
3. The voltage and frequency of your location (V/Hz).
4. Any additional accessories needed, such as an air tank, filters, or air dryers.
Provide us with these details, and we will craft a tailored solution for you!
Q4. What is the general unit conversion?
1Bar = 0.1MPa = 14.5PSI
1m³/min = 35.32cfm
1KW = 1.34HP
Q5. What is the available voltage air compressor?
A: Sanzhi offers compressors in voltages of 380V/50Hz/3P, 400V/50Hz/3P, 415V/50Hz/3P, 220V/60Hz/3P, 440V/60Hz/3P, and can customize according to your requirements.
Q6. How long is the delivery time?
A: For standard voltage specifications, our streamlined production process ensures a lead time of just 15 working days post order confirmation. If you require custom non-standard voltage configurations, please reach out to our dedicated sales team for precise delivery timelines.
Q7. What's the payment term?
A: Our payment terms are strategically structured to facilitate smooth transactions: an initial 30% T/T deposit in advance, followed by 40% T/T prior to shipment, with the remaining 30% T/T due upon receipt of the B/L copy. We accommodate payments in both USD and RMB for your convenience.
Q8. How about your warranty?
A: We provide an industry-leading warranty, covering the entire machine for one year and the screw air compressor for two years, excluding consumable spare parts. This ensures peace of mind and reliability for your operations.
Q9. What about the maintenance?
A: The initial maintenance is scheduled after the first 500 operating hours. Subsequent maintenance intervals are tailored between 2000-3000 hours, depending on specific working conditions, ensuring optimal performance and longevity of your equipment.
Q10. Can machines be run in high-temperature environment?
A: Absolutely, our machines are rigorously engineered to perform efficiently in high-temperature environments, with an operational temperature range from -20° to 45° (-4ºF to 113ºF), ensuring reliable performance under extreme conditions.
Q11. Do you offer OEM service?
A: Yes, we proudly offer both OEM and ODM services. Our professional design team is committed to flexibility and precision, ensuring that we meet your specific requirements with excellence.
Q12. How long could your air compressor be used?
A: Our air compressors are meticulously crafted for durability and reliability, with a typical lifespan that exceeds 10 years, ensuring long-term value for your investment.
Q13. Will you provide some spare parts for the machines?
A: Yes, we guarantee the availability of spare parts for all our machines, ensuring uninterrupted operation and quick replacements when necessary.
Q14. How about your after-sales service?
A: We offer comprehensive after-sales support, including online guidance for installation and commissioning. Additionally, we can dispatch experienced engineers for on-site training and installation assistance, ensuring seamless integration and optimal performance of your equipment.
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